To know what is final setting time of cement, you need to know what the setting time in cement is and how the process works in brief. So, cement is made by mixing or binding aggregates and water. Generally, cement has concrete and cement mortar in it. So, after mixing the water a paste is formed which can be given any shape for the first few minutes due to its elasticity. Afterwards, the mixture hardens and you cannot mould any shape out of it. The early time of hardening is known as the ‘Setting time of cement”. There is no specific time for setting of cement as this timing usually varies on different factors such as type of cement, fineness of cement, chemicals, sand, ambient temperature during casting, presence of certain types of salts, and the percentage of water, etc. Now, let me get back to explaining about final setting time of concrete.
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Well, before the final setting, the cement needs water and that’s how the paste is formed. This paste starts getting hard within 30 minutes. Since it initially takes 30 minutes for the paste to harden this time span is also known as ‘initial setting time of cement’. After this the cement starts losing its plasticity. If the shape you desire is not given during this time, the cement will have to be rejected.
The final setting time is the time when the cement loses its plasticity which takes about 5 to 6 hours. This is when the cement hardens and attains the moulded shape given to it. After the final setting time of concrete, you can remove the form of scaffolding which was giving the shape.
This was all about final setting time of concrete. I hope you find this informative.
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What is final setting time of cement?
Ghisu
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2 Year
2022-08-26T10:31:32+00:00 2022-08-29T07:14:50+00:00Comment
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